A sight-impaired person must depend on their remaining senses for direction. Initially, the lack of vision can produce anger and frustration until trained to utilize what remains. Humans can also be sight-impaired as it relates to spiritual matters, which is evident by a lack of vision and control. The direction that is needed can only come from one source, the supernatural revelation from God Himself.
Proverbs 29:11 states, "Where there is no revelation people cast off restraint." God has not called believers to an unrestrained life caused by a lack of revelation. He reveals Himself through the wise instruction of His word. When applied daily, it will produce a life of vision blessed by heeding "wisdom's instruction."